Fate assigns the test

I have often wondered about the law of reincarnation. Will you please make it clear to me?

There are within the one law, several rules. A being is reincarnated so that he may learn new lessons; if he passes, he need never again meet similar tests. There is no partiality in the astral. Everyone in time is given a happy life to live upon the earth. If in the course of events pertaining to this life, he does only good and clings to the truth learned by many a previous struggle, when he returns to the astral, he will be given an insignia. Each time a soul qualifies, there is written in the Book of Fate, the word Truth. One who disobeys the rules of the astral is ordered to return to the earth to repeat past lessons; if he passes the tests, he will be able to enter the White Circle and perform the duties of the members.

But I was told once that those who wanted to return to earth could do so if they willingly took lives inferior to their advancement, and which were not assigned to them in the Book of Fate.

Yes, that is possible in certain cases. For instance, when one has qualified in other tests and his mental reflection has been more nearly perfected, he will be allowed to go before the Court of Adjustment and ask for a stated time at which to return to the earth and overcome all longing for the physical. After consideration by the highest order, the request will be answered, although one is seldom permitted to choose the life he will live on earth. Fate assigns the test.